Pneumatic hub.



PATENTED AUG. l, 1908.

PNEUMATIG HUB. APPLICATION FILED MAR. 16, 1907. i

JOHN DUGHAN, ROLAND DUCHAN L JOHANN DUOHAN.

` ATTORNEYS Unrrn err-ron.

JOHN DUFHAN. OF EI/IZABETHPORT, NEW J RSEY, AN'DROLAND DUCHAN AND JOHANNc DUCHAN. lll" VIENNA. AVSTRJlNGRY.

sr AVMLABLB COPY Specification of Letters Pnceit.

PNEUMATIC HUB.

Patented Aug. 11, 1908. l

Applicat-i n ied March 16, 1907. Serial ilio. 362,652.

To all 713710211 it may emmer/z.'

Be it known that. we, Join: l'ii'iiixx, n eitiizen ol' the UnitedSintes, and n resident ol Eliznbethport, in the county of Union andState of New Jersey; ROLAND ihfjnixx, :i resident of Guinpoidskirehenbei vvien, Yienna, Austria, and JonANN Droniin, n resi* dent olt Badenbei Vivien, 7Vienna, insti-iii, both subjeets of the hhnperor ol'iustrin, have invented fi new :ind lungi-overl Pneu matie l'lub, oiwhich the lollowin; 1j is s full, clear, and exacty deseription.

This invention relaties to tho lrnbs oil Yehicles; the object ol theinvention being' to provide pneumatic hub which will he siniplyvconstructed Vith :i` View lo enabling' the pneunnitie Cushion lo berendilj,Y removed or replfieed when dvsired.

The invention is experted to be ieeizilly .useful in eonneetion withnuloinobi es :ind siiniln r Yehieles.

The invention Consists in the ronsii'iielion and combination ol' pui-'Lsto bo :noi-e i'nllj.' described l1eieiii;,;l'.er and piirtienlmly setl'orth in the claims.

Reference is to be had to the accompanying drawings forming nv part Qi'this specification, in which similar characters oi" rel'e 'ence indieste corresponding parts in both the iignies, in which Figure 1 is nside elevation oi' s, wheel hub showing an end plate therefor reinoied,the inner parts of the hnb being' repiW-ented in cross section or brokenaway; this .f i be considered :i section on the line -i oi" Fig. 2; andFig. 2 n. longitudinal central section oi the hub shown in Fig. i7`niidthis View may he considered :is s sei-tion on the line 2-2 of Fig.` i.

Referring more particularly to tr parts. i represents an axle oi anysiiitnble 1foi-in, the extremity thereof beine; Yformed into n spindleor arin 2 oi' reduced diameter. enr the pointy of connect-ion betweenthis spindle and Athe axle l, the axle is provided with threads 3 forthe nttaelnnent of eheeh nuts Li, which cheek nuts hold in position e.eolizir 5; the purpose oiE which rollin' will appear more fullyhereinafter: @n the inner end oi the Spindle 2 we provide threads (iwhieh ineili tate the attachment ol' n nail rin; .7, 'lhe outer lare ofthis 'mill ring is t'oi'ined into n rzicewny 'lor bulls S.' The outerextremity oi the spindle .2 is provided with siinihir threads (.for theiittm'lnnent ol zi bull rinf il o ll ball ring i.: similarly providedwith :i bnll rare lor halls i i The outer extremity of the bull ringI l?is oi redueed diameter as shown, sind provided `with threads 12 for n,)ni'pose wliieh will :ippenr niorelill)v hereinalter.

lotntziolj-,f mounted on thel spindle 2, We provide n sleeve` i3, whichsleeve has a redneed cylindrical neeh which connects enlarged her lsi-land 15. The head 14 is nnnle intepriil with the, neck while the head'E5 is :atta-fined by screw threads i5, as indieaited. in l he spire@immediately surroundingr the ne li oi the sleeve zuid between the headsii l i5, We provide L pneumatic cushion consisting ol two distinctlpneumatic pads or rnshions l? and 1S. These pads :ire snbsizuitinllg'seniiwirenhir torni ns shown in Fig. l, their ends being: arrangedabutting against each other :is indiented. One of the pads is preferablyoi' sliiglitl;v larger diameter than the other. so that :it itsextremities it overlaps or projects beyond the opposite paid so :is 'topresent shoulders :is shown. These pneunistie cushions :are enveloped inn cylin" dricnl esse EQ, which Consists ol two similar tubular seeifions2U and 2]. `hese tubular sections correspond in diameter to the pads towhich they are a pplied. so that the ends 22 of the sin: ller section:ibut against the ends of the psd E.

The spo i i the Wheel are :ill formed into heads Q4, t

nl. de faces of 'which :ibut

against auch oi' ns shown in Fig'. '1, :ind 'these heads firs all boltedor seenred between lates as indicated in Fig. i2. The nos ot these sideplates 26 lie against wes of the heads .i4 :ind 15, inaking a sli-(lingffit t-li; ewit-h, iis will be readiiy understood. The inner lzices ofthe heads .'Z-i are Conserve to 'lity the curvature oi the seclions :ind2i, so that the wheel may be eonsidered 'formed with n. c i'lindrieslehninber 217, within which the pnonnnitie. cushions are received. 'lhosieeve i3 is mounted to rotate on thl halls, the hzlills being held inposition by retaining and 29 applied as shown. To the outer iti-oo of'they removable head 15, there is sttfmhed :in oil wip 3() which isprovided with npenings to ieeei've n splitI pin 3l whieh pn the end otthe spindle and rei i il), :is will be rendiljv under i 3%() :ie-ts ns:i hub init lo nsf g he wheel on the 'longitudinally ydisposed shoulders34 are the edges of the case section 21 abut.

formed. These shoulders tend to' revent n rotation of the cushions aboutthe s eeve end assist the tubular shell 1.9 1n this' respect. In

this connection attention is drawn to the fact that the bore of the hubwhich lits to the tubular section 21- is enlarged so that shoulders areformed in the wooden hub against which Hence -it is impossiblefm thecase 1Q to lrotate in the hub. .Y

With e wheel constructed'es described evidently any shock at the rim ofthe wheels will be absorbed,I by the pneumatic cushion, and 1n thlsconnection 1t shouldbe under .stood the-t the lhub of ,the wheel isfreely movable between the guide heads 14 :md 15.

Having thu/s described our invention, we ,claim es new ,und desire tosecure by Letters Patent; 1'/ ,f

1.,."111 n wheel, in combination, e hub hevinsr e' bore, n. tubuln' casereceived in said bore sind lnesent-ing/:i projection on the inner `sidetlwrcof', afsleeve, end n pen of pneumatic pads/di nosed around seidsleeve and vvfilling the spacel between seid sleeve end seid cse, saidprojection aiiording means for preu venting the rottttion ol said padsrelative to said case.

2. In e wheel, in combination, e hub heving` e boire with en enlargedpart :1nd reduced part, e. sleeve consisting of' en enlarged sectionreceived. in seid enlarged part ot' said bore and n. reduced sectionreceived in said reduced part of said bore, a. sleeve*` and pneumaticpeds disposed around seid sleeve and filling the space between said.case and seid sleeve.

testimony whereof l. have signed my nan-.c to this specification in thepresence of twosubscribing witnesses,

` JOHN DUCHAN.

Witnesses:

JOHN AUER, HENRY Fnens.

ln testimony .vhereotlheve signed my neme to this specification inthep'esence of two subscribing witnesses.

ROLAND DUCHN.

. Witnesses:

ALvEs'ro S. Hoces, AUGUST Fnecnn,

In testimony whereof lheve signed my neme to this specification in thepresence of two subscribing witnesses.

JUHANN D UCHAN. l/Vitnesses:

ALvEs'ro S. Hoden, A Uens'r Fueenn.

